Snap-hook or shackle



C. P. KUHL.

SNAP HOOK 0R SHACKLE. APPLICATION FILED JAN. 28, Iseo.

Patented Dec. 28, 1920.

Lamm 'IRLES P.

KANSAS.

Application lecl January 28, 1920.

To all whom t may concern.'

Be it known that l, @Hi-nenne P. KUHL, a citizen of the United States, residing,l at lGrinnell, in the county of Gove and State or" Kansas, have invented certain new and useful improvements in Snap Hooks or Shackles, of which the following',` is a speciiication, reference being had to the accoinpanying drawings.

rlhis invention relates to snap hooks and particularly to snap hooks ci relatively large size to be used for chains or cables., though l do not wish to be limited to this as smaller size hooks might be used tor harness and Jror other purposes.

The general object ot the invention is the provision of a snap hook of a particularly strong construction and in which the spring; is fairly concealed and protected so that the interior face of the hook or shackle is smooth and unobstructed, there being no projecting parts which might become engaged and injured by contact with a chain or cable.

A further object is to provide a shackle on the order o1 a snap hook in which the pivoted tang has such engagement witl. the hook portion proper that the tang has prac tically as much pulling strength as the body ot the hook.

Other objects will appear in the course of the following description.

My invention is illustrated in the acronipanying drawings, in which:

Figure 1 is a side elevation oi a snap hook or shackle constructed in accordance with my invention;

Fig. 2 is a fragmentary elevation ot the tang, the adjacent portion oi the shank beinp; shown in section;

Fig. 3 is a tace View ci the tang;

Fig. 4; is a longitudinal elevation, partly in section, showing the pivotal connection between the tang and the body oi the shackle or snap hook;

Fig. 5 is a section on the line ot Fig'. 1;

Fig. 6 is a section on the line 6--6 oit Fig. 1;

Fig. 7 is a side elevation oi a slightly modified form oi the device.

lle-terrine' to the drawings, and particularly to Figs. 1 to 6, it will be seen that rny shackle comprises a body portion 10 which at one end is bent in a relatively large circle to orin the hook portion 11, and at the Specification of Letters Estant.

Fatented Dec. 2%, i920.

Serial No. 354,728.

other end is bent to torni a relatively small loop 12. The extremity ci this loop 12 is reduced in thickness to forni an ear 13 which is perforated. The walls 14 at the inner end oi said earlike portion are ooncavely curved as illustrated in Fig. 4E.

ltlounted upon this ear 13 is a tang 15, one end of which is biturcated or slotted to embrace the ear 13, this end being perforated for the passage of a transverse pivot pin or screw 16. The extremity of the loop portion 12 ot the body 10 is bored longitudinally and the tang,l 15 is also bored longitudinally, and inserted in these bores is a springw 17 which is angular in form so as to urge the tree end ot the tang; 15 ont against and into alinernent with the free end of the hook portion 11 ot the body.

The free end of the hook portion 11 longitudinally grocved as at 18, this groove extending inward tor a certain distance. The inner face of the hook portion 11 is notched as lat 19 the groove 18 intersecting' this notch. The outer wall of the notch 19 is approximately perpendicular to the enter and inner faces of the hook portion 11. The tane; 15 at its tree extremity is reduced in width as at 2O and the end of this reduced portion is enlarged to provide a head 21, the outer tace of which is transversely rounded to snit the cross section oi the material Ytroni which the shackle is made, the inner 'face of this head being beveled as at 22 so as to lit within the notch 19. The rear tace 23 oit the head is lat so as to engage against the outer wall of the notch 19 and so that these twoh faces will be in contact and parallel to each other when the tang 15 is outwardly swung.

.ii course, l do not wish to be limited to the particnlar torni of hook shown in Fig. 1, and in Fig'. l illustrate another forni oi hook, particularly adapted to be used in connection with ropes and harness, in which the shackle body 101 is provided with the tang,l 15au as previously described, there being;` however a ring); or eye 2li swiveled to the shackle in an obvious manner.

Shackles or snap hooks of the character described may be made in different styles `to; chains and cables, for harness and strap work and for ropes and lines. in case the spring, 17 should break, the spring may be replaced by removing,- the screw 16, then separating the tang iro1n the body. The old loo spring may then be Withdrawn and a new spring inserted and the parts again conn'ected to each other.

I have provided a snap hook or shackle` which is adapted for all purposes, yet i's very simple in its construction and is eX- tremely durable. When the 'tang is closed one side of the shackle or link has practically the same strength as the other side.,

Vhat I claim is: i

1. A snap hook or shackle of the character described comprising a body, a tang, one eX- tremity of the body and the adjacent eX- tremity of the tang having pivotal engagement With each other, the pivoted endet the tang and the adjacent end oi the body being formed With longitudinally extending, regis? teringbores, and a spring inserted in said bores andV yieldingly resisting oscillafOl Of the tang relative to the body.

2. A snap hook or shackle ot the character described comprising a'loop shaped body, one extremity of which is reduced in thickness and transversely pierced, the opposite extremity yhaving a notch on its inside face and being formed With a groove extending from the end face into said notch, a tang provided at one end to fit said reduced portion and .transversely pierced, the opposite end of the tangk having a head adapted to lit said notch and connected to the tang by a reduced portion litting said groove, a screuT connecting the tang to said reduced portion of the body, the pivoted end of the tang and the adjacent end of the body being formed With longitudinally extending registering bores and a normally angular spring disposed in said bores and urging the tangto its outwardly projected position.

In testimony whereof I hereunto afx my signature,

' CHARLES P. KUHL. 

